Passing COMLEX Level 1 might sound straightforward with a ~90% pass rate — but that remaining 10% carries consequences that follow you for the rest of your medical career. We break down exactly what's changed since the pass/fail shift, what the exam actually looks like in 2025–2026, and the study strategies that separate students who pass confidently from those who don't.

Navigating the choice between USMLE and COMLEX exams can feel overwhelming for medical students, especially DO students who uniquely face the option of taking one or both exam series. This comprehensive guide breaks down everything you need to know—from exam formats and costs to common myths and strategic considerations—helping you make the smartest decision aligned with your career goals and personal circumstances.